An information disclosure vulnerability exists in the way that the Color Management Module (ICM32.dll) handles objects in memory. This vulnerability allows an attacker to retrieve information to bypass usermode ASLR (Address Space Layout Randomization) on a targeted system. By itself, the information disclosure does not allow arbitrary code execution; however, it could allow arbitrary code to be run if the attacker uses it in combination with another vulnerability.
In a web-based attack scenario, an attacker could host a specially crafted website that is designed to exploit the vulnerability and then convince users to view the website. An attacker would have no way to force users to view the attacker-controlled content. Instead, an attacker would have to convince users to take action, typically by getting them to click a link in an email or Instant Messenger message that takes users to the attacker's website, or by opening an attachment sent through email.
The security update addresses the vulnerability by correcting how Color Management Module handles objects in memory.
## Where it's fixed | Platform | Product | Fixed in | Fix | Released | |---|---|---|---|---| | Microsoft | Windows 7 for 32-bit Systems Service Pack 1 | | [KB4056897](https://patchblox.com/security/data/fix/microsoft/kb4056897.md) | Jan 18, 2018 | | Microsoft | Windows 7 for 32-bit Systems Service Pack 1 | | [KB4056894](https://patchblox.com/security/data/fix/microsoft/kb4056894.md) | Jan 18, 2018 | | Microsoft | Windows 7 for x64-based Systems Service Pack 1 | | [KB4056897](https://patchblox.com/security/data/fix/microsoft/kb4056897.md) | Jan 18, 2018 | | Microsoft | Windows 7 for x64-based Systems Service Pack 1 | | [KB4056894](https://patchblox.com/security/data/fix/microsoft/kb4056894.md) | Jan 18, 2018 | | Microsoft | Windows Server 2008 R2 for Itanium-Based Systems Service Pack 1 | | [KB4056897](https://patchblox.com/security/data/fix/microsoft/kb4056897.md) | Jan 18, 2018 | | Microsoft | Windows Server 2008 R2 for Itanium-Based Systems Service Pack 1 | | [KB4056894](https://patchblox.com/security/data/fix/microsoft/kb4056894.md) | Jan 18, 2018 | | Microsoft | Windows Server 2008 R2 for x64-based Systems Service Pack 1 | | [KB4056897](https://patchblox.com/security/data/fix/microsoft/kb4056897.md) | Jan 18, 2018 | | Microsoft | Windows Server 2008 R2 for x64-based Systems Service Pack 1 | | [KB4056894](https://patchblox.com/security/data/fix/microsoft/kb4056894.md) | Jan 18, 2018 | | Microsoft | Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) | | [KB4056897](https://patchblox.com/security/data/fix/microsoft/kb4056897.md) | Jan 18, 2018 | | Microsoft | Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) | | [KB4056894](https://patchblox.com/security/data/fix/microsoft/kb4056894.md) | Jan 18, 2018 | | Microsoft | Windows Server 2008 for 32-bit Systems Service Pack 2 | | [KB4056942](https://patchblox.com/security/data/fix/microsoft/kb4056942.md) | Jan 5, 2018 | | Microsoft | Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation) | | [KB4056942](https://patchblox.com/security/data/fix/microsoft/kb4056942.md) | Jan 5, 2018 | | Microsoft | Windows Server 2008 for Itanium-Based Systems Service Pack 2 | | [KB4056942](https://patchblox.com/security/data/fix/microsoft/kb4056942.md) | Jan 5, 2018 | | Microsoft | Windows Server 2008 for x64-based Systems Service Pack 2 | | [KB4056942](https://patchblox.com/security/data/fix/microsoft/kb4056942.md) | Jan 5, 2018 | | Microsoft | Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation) | | [KB4056942](https://patchblox.com/security/data/fix/microsoft/kb4056942.md) | Jan 5, 2018 | --- Data as of 2026-11-11T01:43:54Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo Free to use with attribution: show "Data: Patchblox Patch Radar" with a link to https://patchblox.com/security/patch-radar. Terms, including what needs a written agreement: https://patchblox.com/security/patch-radar/use-the-data Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.